Schedule Your Edit: A Simple yet Effective Diffusion Noise Schedule for Image Editing

TL;DR

This paper introduces the Logistic Schedule, a new noise schedule for diffusion models that improves image editing fidelity by reducing inversion errors and preserving content, without needing retraining.

Contribution

The paper proposes the Logistic Schedule, a novel noise schedule that eliminates singularities and enhances inversion stability in diffusion-based image editing.

Findings

Reduces noise prediction errors in diffusion inversion.

Improves content preservation and edit fidelity.

Compatible with various editing methods without retraining.

Abstract

Text-guided diffusion models have significantly advanced image editing, enabling high-quality and diverse modifications driven by text prompts. However, effective editing requires inverting the source image into a latent space, a process often hindered by prediction errors inherent in DDIM inversion. These errors accumulate during the diffusion process, resulting in inferior content preservation and edit fidelity, especially with conditional inputs. We address these challenges by investigating the primary contributors to error accumulation in DDIM inversion and identify the singularity problem in traditional noise schedules as a key issue. To resolve this, we introduce the Logistic Schedule, a novel noise schedule designed to eliminate singularities, improve inversion stability, and provide a better noise space for image editing. This schedule reduces noise prediction errors, enabling more faithful editing that preserves the original content of the source image. Our approach requires no additional retraining and is compatible with various existing editing methods. Experiments across eight editing tasks demonstrate the Logistic Schedule's superior performance in content preservation and edit fidelity compared to traditional noise schedules, highlighting its adaptability and effectiveness.